Wild blackberries are relatives of the rose. Just like a raspberry, the blackberry is called an "aggregate fruit" because each berry is really a cluster of tiny fruits.

Potential Benefits of Blackberries

Blackberries are considered to be an astringent because of their high tannin content. Studies show that tannins tighten tissue, lesson minor bleeding, and may help to alleviate diarrohea and intestinal inflammation.

German health authorities recommend blackberries for mild infections including sore throats and mouth irritations. Traditionally, blackberries have been used to alleviate hemorrhoids. Scientists have also reported antitumor properties associated with tannins found in some varieties of blackberries. Overindulgence of tannin-rich blackberries may lead to constipation.

Blackberries abound in powerful antioxidants, such as anthocyanin pigments, responsible for the purple color of blackberries. Additional antioxidants in blackberries are vitamins C and E, and ellagic acid; all may provide protection against cancer and chronic disease. 

Blackberries are a natural source of salicylate, an active substance found in aspirin. Blackberries are a source of soluble fiber.

Blackberries are really good for the digestive system and aging properties. Testing shows that do not loose their antioxidant power when cooked and processed in jams. 

Consumers don't need to eat a lot of blackberries to get the antioxidant benefits, a half cup a day of fresh or frozen will do.